2000123 has 4 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 1984248.

The previous prime is 2000113. The next prime is 2000143. The reversal of 2000123 is 3210002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3210002 = 2 ⋅1605001.

It is not a de Polignac number, because 2000123 - 2⁴ = 2000107 is a prime.

It is a Duffinian number.

2000123 is a modest number, since divided by 123 gives 20 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2000123.

It is not an unprimeable number, because it can be changed into a prime (2000113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7748 + ... + 8001.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

2^2000123 is an apocalyptic number.

2000123 is a deficient number, since it is larger than the sum of its proper divisors (15877).

2000123 is a wasteful number, since it uses less digits than its factorization.

2000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15876.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 2000123 is about 1414.2570487715. The cubic root of 2000123 is about 125.9946877747.

Adding to 2000123 its reverse (3210002), we get a palindrome (5210125).

The spelling of 2000123 in words is "two million, one hundred twenty-three", and thus it is an aban number.